蒙古族正颌外科正常值的三维X线测量研究

Three-dimensional cephalometric standard in the Mongolian adults with occlusion relation

目的:研究蒙古族正常成年人的三维头影测量标准,为正颌外科提供诊断治疗设计的定量依据。方法:选择符合正常(?)标准的蒙古族成年人105名(男51名,女54名),选择92名(男女各半)运用计算机辅助X线头影测量系统,对颌面软、硬组织进行三维X线头影测量分析。结果:①硬组织三维X线,线距测量有性别差异而角度项目无性别差异;②线距项目在矢状、横向、垂直三维方向与广东人、西安人有显著性差异;③左右相同测量项目结果比较并不完全一致;④颅颌面软组织三维头影测量结果存在性别、民族和种族的差异。结论:通过本次研究获取颌面软、硬组织的三维信息,揭示了蒙古族正常(?)成人的骨骼,外貌特征,为临床的正颌、正畸提供了依据。

Objective: The research is carried out to study the three-dimensional cephalometric standard in the Mongolian adults with normal occlusion to provide quantity foundation for diagnosis, treatment and design for orthognathic surgery. Methods: One hundred and five Mongolian adults(male 51 and female 54) and 92 Mongolian adults(male 46 and female 46) with normal occlusion were chosen. Three-dimensional radiographic cephalometry was used to measure their craniofacial tissues. Result: (1)The results of 3D X-ray cephalometry showed that the length is connected with sexual discrepancy, but the angles have no relationship with sex. (2)The Mongolian adults are different in sagittal and vertical and horizontal measurement when compared with adults of Guangdong and Xi'an. (3)There are differences when the same measurements of both sides are compared. (4) Differences are exist in the three-dimensional soft tissues items with different sexes and nationalities. Conclusion: Three-dimentional information about the characteristics of Mongolian provide objective basis for the clinic.